Maybe I didn't clarify much. It doesn't require more work than they are already presumably implementing for spam detection (unless I way too much overestimate

Maybe I didn't clarify much. It doesn't require more work than they are already presumably implementing for spam detection (unless I way too much overestimate big tech's abilities), it's a little touch to an already-being-implemented system with a bonus of being able to block competitors to some extent, without direct liability.